本文主要是介绍【C#随手记】FTP上传与下载,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
完整代码:
using System.IO;
using System.Net;
/// <summary>
//——————————参数示例
//private string FTPIpPath = "ftp://119.45.5.197:21/";//默认端口号21
//private string UserName = "Njiyue";//用户名
//private string Password = "000000";//密码
//private string FTPFolderPath = "DigitalMediaInteractiveSystem/";//注意:IP后接的不是“/www/wwwroot/”根目录,而是FTP目录;
/// </summary>
public static class FTPUploadAndDownload
{
/// <summary>
/// FTP上传 注意设置读写FTP权限
/// </summary>
/// <param name="LoadFilePath">本地文件的路径</param>
/// <param name="FTPPath">要上传到的FTP文件夹路径</param>
public static void _____UpLoadFile(FileInfo fileInfo, string FTPPath, string userName, string password)
{
//FileInfo fileInfo = new FileInfo(LoadFilePath);
FtpWebRequest request = CreateFtpWebRequest(FTPPath + fileInfo.Name, userName, password, WebRequestMethods.Ftp.UploadFile);
int buffLength = 2048;//一次要读取和写入多少个字节
byte[] buff = new byte[buffLength];//写入的字节
int contentLen;
FileStream fs = fileInfo.OpenRead();//读取文件,将文件转换成字节文件
Stream strm = request.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);//读取文件2048个字节,偏移为0,并赋值给buff字节组;
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen); //重点方法,将流写入
contentLen = fs.Read(buff, 0, buffLength);
}
fs.Close();
strm.Close();
}
/// <summary>
/// FTP下载 注意设置FTP读写权限
/// </summary>
/// <param name="FTPFilePath">要下载的FTP文件的路径</param>
/// <param name="LoadPath">本地文件夹的路径</param>
public static void _____DownloadFile(string FTPFilePath, string LocalPath, string userName, string password)
{
FtpWebRequest request = CreateFtpWebRequest(FTPFilePath, userName, password, WebRequestMethods.Ftp.DownloadFile);
FtpWebResponse response = (FtpWebResponse)request.GetResponse();//获得相应体
FileStream filestream = File.Create(LocalPath + Path.GetFileName(FTPFilePath));
Stream responseStream = response.GetResponseStream();
int buflength = 2048;
byte[] buffer = new byte[buflength];
int bytesRead;
bytesRead = responseStream.Read(buffer, 0, buflength);
while (bytesRead != 0)
{
filestream.Write(buffer, 0, bytesRead);
bytesRead = responseStream.Read(buffer, 0, buflength);
}
responseStream.Close();
filestream.Close();
}
//创建FTP请求
private static FtpWebRequest CreateFtpWebRequest(string uri, string UserName, string Password, string requestMethod)
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(uri);
request.Credentials = new NetworkCredential(UserName, Password);
request.KeepAlive = true;//请求完成后是否保持活动状态,不断开连接
request.UseBinary = true;//指示服务器要传输的二进制数据
request.UsePassive = true;//被动
request.Method = requestMethod;
return request;
}
}
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